Not sure if others have had this problem, but my back latch (part on the glass) was loose. This was due to the rubber seals shrinking and the 2 pieces of the latch touched keeping me from tightening all the way. The outside piece has posts which I just ground down about 1/16 inch. Now I can snug t down. DO NOT over tighten as it will break the glass.

I only had the problem because I kept hearing a creaking sound going over speed bumps. Easy cheap fix.

 

I've seen many rx7's , good gaskets and bad, all use or need to use some sort of adhesive in between the gasket and the window, also a little nail polish or blue loctite will stop the screws from vibrating loose.

 

Actual adhesive between the bracket and the glass would be a bad idea; the bracket needs to "float" somewhat laterally to maintain alignment with the latch.

A small amount of Hylomar between the bracket rubbers and the glass will dampen the movement down & prevent rattles. Doesn't harden or wash out, won't hurt the rubber.